云南坝子型城市大气污染与气象条件关联性研究及污染路径分析——以文山市为例
The Correlation between Atmospheric Pollution and Meteorological Conditions in Yunnan Bazi Type Cities Research and Pollution Path Analysis—A Case Study of Wenshan City

近年来，文山市在3~4月份出现了连续的PM_2.5超标现象，且4月份颗粒物浓度水平在全年最高。本文分析了文山市主城区的地形、气象、产业发展、农业源及周边环境等条件，通过分析，认为文山市冬春季大气污染原因主要有气象影响因素，外源输入因素，内源影响因素，其中文山市位于山区的地形地势加重了逆温效应影响，内源影响包括机动车、工业排放、秸秆焚烧等。本文对下一步文山州加强大气污染防治提出对策建议。
In recent years, Wenshan City has experienced continuous PM_2.5 exceedance from March to April, and the particulate matter concentration level in April was the highest throughout the year. This article analyzes the terrain, meteorology, industrial development, agricultural sources, and surrounding environment of the main urban area of Wenshan City. Through analysis, it is believed that the main causes of air pollution in winter and spring in Wenshan City are meteorological factors, external input factors, and internal influencing factors. Among them, the terrain and topography of Wenshan City in the mountainous area exacerbate the effect of temperature inversion, and internal influences include motor vehicles, industrial emissions, straw burning, etc. This article proposes countermeasures and suggestions for strengthening air pollution prevention and control in Wenshan Prefecture in the next step.